Naval Ravikant is an Entrepreneur, Startup Investor, and modern-day philosopher.

He has a gift for explaining complex ideas in pithy one-liners and tweets and here are some of his best ideas on Thinking Clearly:

• “If you can’t explain it to a child, then you don’t know it.”

• “If someone is using a lot of fancy words and a lot of big concepts, they probably don’t know what they’re talking about.”

• “‘Clear thinker’ is a better compliment than ‘smart.’”

• “The advanced concepts in a field are less proven. We use them to signal insider knowledge, but we’d be better off nailing the basics.”

• “The number one thing clouding us from being able to see reality is we have preconceived notions of the way it should be.”

• “One definition of a moment of suffering is ‘the moment when you see things exactly the way they are.’”

• “What you feel tells you nothing about the facts—it merely tells you something about your estimate of the facts.”

• “If you don’t have a day or two every week in your calendar where you’re not always in meetings, and you’re not always busy, then you’re not going to be able to think. You’re not going to be able to have good ideas for your business. You’re not going to be able to make good judgments.”

• “A contrarian isn’t one who always objects—that’s a conformist of a different sort. A contrarian reasons independently from the ground up and resists pressure to conform.”

These quotes are taken from the book “The Almanack of Naval Ravikant” by Eric Jorgenson.